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// SPDX-License-Identifier: Apache-2.0
package firrtlTests
import firrtl.{CircuitState, Transform, UnknownForm}
import firrtl.passes._
import firrtl.testutils._
class CheckInitializationSpec extends FirrtlFlatSpec {
private val passes = Seq(
ToWorkingIR,
CheckHighForm,
ResolveKinds,
InferTypes,
CheckTypes,
ResolveFlows,
CheckFlows,
new InferWidths,
CheckWidths,
PullMuxes,
ExpandConnects,
RemoveAccesses,
ExpandWhens,
CheckInitialization,
InferTypes
)
"Missing assignment in consequence branch" should "trigger a PassException" in {
val input =
"""circuit Test :
| module Test :
| input p : UInt<1>
| wire x : UInt<32>
| when p :
| x <= UInt(1)""".stripMargin
intercept[CheckInitialization.RefNotInitializedException] {
passes.foldLeft(CircuitState(parse(input), UnknownForm)) { (c: CircuitState, p: Transform) =>
p.runTransform(c)
}
}
}
"Missing assignment in alternative branch" should "trigger a PassException" in {
val input =
"""circuit Test :
| module Test :
| input p : UInt<1>
| wire x : UInt<32>
| when p :
| else :
| x <= UInt(1)""".stripMargin
intercept[CheckInitialization.RefNotInitializedException] {
passes.foldLeft(CircuitState(parse(input), UnknownForm)) { (c: CircuitState, p: Transform) =>
p.runTransform(c)
}
}
}
"Assign after incomplete assignment" should "work" in {
val input =
"""circuit Test :
| module Test :
| input p : UInt<1>
| wire x : UInt<32>
| when p :
| x <= UInt(1)
| x <= UInt(1)
| """.stripMargin
passes.foldLeft(CircuitState(parse(input), UnknownForm)) { (c: CircuitState, p: Transform) =>
p.runTransform(c)
}
}
"Assign after nested incomplete assignment" should "work" in {
val input =
"""circuit Test :
| module Test :
| input p : UInt<1>
| input q : UInt<1>
| wire x : UInt<32>
| when p :
| when q :
| x is invalid
| else :
| when q :
| x <= UInt(2)
| x <= UInt(1)
| """.stripMargin
passes.foldLeft(CircuitState(parse(input), UnknownForm)) { (c: CircuitState, p: Transform) =>
p.runTransform(c)
}
}
"Missing assignment to submodule port" should "trigger a PassException" in {
val input =
"""circuit Test :
| module Child :
| input in : UInt<32>
| module Test :
| input p : UInt<1>
| inst c of Child
| when p :
| c.in <= UInt(1)""".stripMargin
intercept[CheckInitialization.RefNotInitializedException] {
passes.foldLeft(CircuitState(parse(input), UnknownForm)) { (c: CircuitState, p: Transform) =>
p.runTransform(c)
}
}
}
}
|
